Boosting 2,5-furancarboxylic acid formation by improving support surface oxygen activity in AuPd/Ce1-xZrxO2 catalysts

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Boosting 2,5-furancarboxylic acid formation by improving support surface oxygen activity in AuPd/Ce1-xZrxO2 catalysts	4 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1016/j.cattod.2025.115442

Title: Boosting 2,5-furancarboxylic acid formation by improving support surface oxygen activity in AuPd/Ce1-xZrxO2 catalysts
Creator: Kharlamova, Tamara S.
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Timofeev, Konstantin L.
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Metalnikova, Vera M.
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Liotta, Leonarda Francesca
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Vodyankina, Olga V.
Date: 2025
DOI: 10.1016/j.cattod.2025.115442
Description: To study the influence of the redox properties of oxide supports on the catalytic properties of AuPd catalysts in the 5-hydroxymethylfurfural (5-HMF) oxidation under weak alkaline conditions, a series of Ce1-xZrxO2 supports (x = 0, 0.5 and 1) and the corresponding bimetallic AuPd/Ce1-xZrxO2 catalysts have been prepared. The samples are studied by X-ray fluorescence spectrometry, X-ray diffraction, Raman spectroscopy, temperatureprogrammed reduction with hydrogen, and temperature-programmed desorption of ammonia and carbon dioxide. The comparative studies of the AuPd/Ce1-xZrxO2 catalysts show that the active surface oxygen of the Cebased supports plays a significant role in the aerobic HMF oxidation to 2,5-furancarboxylic acid (FDCA) under weak alkaline conditions (NaHCO3, pH ≈ 8) boosting the 2,5-formylfurancarboxylic acid (FFCA) oxidation stage. PdAu/CeO2 and PdAu/CeZrO2 provide the FDCC yields of 86 and 71.5 %, respectively, at 80 ◦C, while the main reaction product for the PdAu/ZrO2 catalyst is the FFCA intermediate. 1.

Created: 29-09-2025

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Химический факультет Boosting 2,5-furancarboxylic acid formation by improving support surface oxygen activity in AuPd/Ce1-xZrxO2 catalysts